Recycling device and powder spraying equipment

Abstract

The utility model discloses a recovery device and powder spraying equipment, the recovery device is used for recovering powder sprayed by a powder spraying machine head and conveying the recovered powder to the powder spraying machine head, and the recovery device comprises a first collecting tank body, a screening assembly, a second collecting tank body, a scraping and sweeping assembly and a powder feeding assembly. The first collecting tank body is arranged on the lower side of the powder spraying machine head; the powder screening assembly comprises a powder screening net, and the powder screening net is arranged on the first collecting tank body and used for screening powder; the second collecting tank body is arranged on the side edge of the powder screening net; the scraping and sweeping assembly comprises a scraping and sweeping piece, and the scraping and sweeping piece is movably arranged on the upper surface of the powder screening net and used for scraping and sweeping disintegrating slag on the powder screening net to the second collecting tank body; the powder feeding assembly is connected with the first collecting tank body and used for recycling powder in the first collecting tank body and conveying the powder to the powder spraying machine head. The recovery device can be used for conveniently recovering powder sprayed by the powder spraying machine head.

Description

Technical Field

[0001] This utility model relates to the field of sintering equipment technology, and in particular to a recycling device and a powder spraying device. Background Technology

[0002] Powder spraying equipment is used to spray powder onto a workpiece to form a coating on its surface. Typically, to prevent dust pollution during the spraying process, a recovery device is installed below the spraying head to collect excess powder that doesn't fall onto the workpiece. The recovered powder is then transported back to the spraying head via this device.

[0003] In related technologies, the recycling device screens the powder through a sieve. Smaller powder particles are recycled through the sieve holes, while larger particles fall onto the sieve. After the powder spraying equipment has been working for a certain period of time, a large amount of debris will accumulate on the sieve. The sieve needs to be manually removed and cleaned, which presents a technical problem of inconvenient recycling. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a recycling device and a powder spraying equipment, which can conveniently recover the powder sprayed from the powder spraying head.

[0005] According to a first aspect embodiment of the present invention, a recycling device is used to recover powder ejected from a powder coating head and to convey the recovered powder back to the powder coating head. The recycling device includes:

[0006] The first collection tank is located on the lower side of the powder spraying head;

[0007] A powder sieving assembly includes a powder sieving screen disposed in a first collection tank, the powder sieving screen being used to sieve powder;

[0008] The second collection tank is located on the side of the powder sieve.

[0009] The scraping assembly includes a scraper, which is movably disposed on the upper surface of the screen and is used to scrape the debris on the screen to the second collection tank.

[0010] The powder feeding assembly is connected to the first collection tank and is used to recover the powder in the first collection tank and transport it to the powder spraying head.

[0011] The heat dissipation structure according to the embodiment of this utility model has at least the following beneficial effects:

[0012] By installing a scraper on the sieve and a second collection trough on the side of the sieve, when large particles of debris accumulate on the sieve to a certain extent, the scraper can scrape the debris off the sieve so that the large particles fall into the second collection trough and are collected by it. It is convenient to use and does not require removing the sieve to clean the large particles of debris, thus facilitating the recovery of powder sprayed from the powder spraying head.

[0013] According to some embodiments of the present invention, a first collection port is provided at the upper end of the first collection tank, the first collection port faces the powder spraying head, and the width of the first collection port is greater than or equal to the powder spraying width of the powder spraying head.

[0014] According to some embodiments of the present invention, the first collecting tank includes a side plate and a bottom plate. The side plate is connected to the bottom plate and surrounds the upper side of the bottom plate. The bottom plate is provided with a discharge port. The bottom plate extends downward from the side plate to the discharge port. The powder feeding assembly is connected to the discharge port.

[0015] According to some embodiments of the present invention, the powder sieving mesh includes a first sieve and a second sieve. The first sieve is located above the second sieve. The first sieve is provided with a plurality of first sieve holes, and the second sieve is provided with a plurality of second sieve holes. The aperture of the first sieve holes is larger than the aperture of the second sieve holes.

[0016] According to some embodiments of the present invention, the scraping component includes a connecting rod, a first scraper, and a second scraper. The connecting rod is movably disposed on the first side of the first screen and the second screen. The first scraper and the second scraper are respectively connected to the connecting rod. The first scraper is located on the upper surface of the first screen, and the second scraper is located on the upper surface of the second screen.

[0017] The second collection tank is located on the second side of the first screen and the second screen, with the first side and the second side adjacent to each other.

[0018] According to some embodiments of the present invention, the scraping assembly further includes a drive motor, which is connected to a connecting rod. The drive motor is used to drive the connecting rod to move the first scraper and the second scraper along the upper surfaces of the first screen and the second screen, respectively.

[0019] According to some embodiments of the present invention, the powder screening assembly further includes a vibration motor connected to the powder screening screen, and the vibration motor is used to provide excitation force to the powder screening screen.

[0020] According to some embodiments of the present invention, the powder feeding assembly includes a housing, a powder feeding motor, a first pipe, a second pipe, and a screw feeding rod. The powder feeding motor is installed inside the housing. The housing has a first opening and a second opening, which are respectively connected to the interior of the housing. The first pipe connects the first opening and a first collecting trough. The second pipe connects the second opening and the powder spraying head. The screw feeding rod is sleeved inside the second pipe and connected to the output end of the powder feeding motor.

[0021] According to some embodiments of the present invention, the recycling device further includes a control valve, which is disposed between the first collecting tank and the powder feeding assembly, and is used to control the on / off connection between the first collecting tank and the powder feeding assembly.

[0022] According to a second aspect of the present invention, the powder spraying device includes a powder spraying head.

[0023] The roller conveyor is located on the underside of the powder coating machine head; and

[0024] In the recycling device described above, the first collection tank is disposed below the roller conveyor.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of a powder spraying device provided in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the first collection tank, screening assembly, and second collection tank of the powder spraying equipment's recovery device;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure of the first collection tank, screening component, second collection tank, and scraping component of the recovery device of the powder spraying equipment shown;

[0030] Figure 4 for Figure 1 The diagram shows the structure of the screening and scraping components of the recovery device in the powder spraying equipment.

[0031] Figure label:

[0032] 1000 powder coating equipment;

[0033] Recycling device 100;

[0034] First collecting tank 10; side plate 11; first collecting port 111; bottom plate 12; discharge port 121;

[0035] Powder sieving assembly 20; powder sieving screen 21; first screen 211; first screen aperture 2111; second screen 212; second screen aperture 2121; vibrating motor 22; flange 221;

[0036] Second collection tank 30; Second collection port 31;

[0037] Scraping assembly 40; Scraping component 41; Connecting rod 411; Through hole 4111; First scraper 412; Second scraper 413; Drive motor 42; Push rod 421; Guide rod 43;

[0038] Powder feeding assembly 50; housing 51; first opening 511; second opening 512; first pipe 52; second pipe 53; screw feed rod 54;

[0039] One-way valve 60;

[0040] Powder spray head 70;

[0041] Roller conveyor 80. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0045] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0046] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Please see Figures 1 to 4 This utility model embodiment provides a recycling device 100, which is used to recycle the powder sprayed from the powder spraying head 70 and to transport the recycled powder back to the powder spraying head 70.

[0048] The recycling device 100 includes a first collecting tank 10, a powder sieving assembly 20, a second collecting tank 30, a scraping assembly 40, and a powder feeding assembly 50. The first collecting tank 10 is located below the powder spraying head 70, and the second collecting tank 30 is located on the side of the first collecting tank 10. The powder sieving assembly 20 includes a powder sieving screen 21, which is located in the first collecting tank 10. The powder sieving screen 21 is used to sieve the powder falling onto it, allowing smaller particles to pass through and fall to the bottom of the first collecting tank 10, while larger particles remain on the powder sieving screen 21. The second collecting tank 30 is located on the side of the powder sieving screen 21. The second collection tank 30 is used to collect larger particles of debris on the sieve screen 21; the scraping assembly 40 includes a scraper 41, which is movably disposed on the upper surface of the sieve assembly 20. The scraper 41 is used to scrape the debris on the sieve screen 21 to the second collection tank 30, so that the larger particles of debris on the sieve screen 21 fall into the second collection tank 30; the powder feeding assembly 50 is connected to the first collection tank 10, and the powder feeding assembly 50 is used to recover the powder in the first collection tank 10 and convey it to the powder spraying head 70.

[0049] In this embodiment of the invention, by providing a scraper 41 on the sieve screen 21 and a second collection trough 30 on the side of the sieve screen 21, when large particles of debris accumulate on the sieve screen 21 to a certain extent, the scraper 41 can scrape the debris on the sieve screen 21 so that the large particles of debris fall into the second collection trough 30 and are collected by the second collection trough 30. It is convenient to use, and there is no need to remove the sieve screen 21 to clean the large particles of debris on the sieve screen 21, thereby facilitating the recovery of powder sprayed from the powder spraying head. Furthermore, the powder feeding assembly 50 recovers the small particles of powder in the first collection trough 10 and transports them to the powder spraying head 70, realizing the reuse of the recovered powder. There is no need for manual powder feeding, which improves the powder feeding efficiency and the degree of equipment automation, and reduces production costs.

[0050] To ensure that the first collecting tank 10 can effectively collect the scattered powder below the powder spraying head 70, in some embodiments, the upper end of the first collecting tank 10 is provided with a first collecting port 111. The first collecting port 111 faces the powder spraying head 70. The length of the first collecting port 111 is greater than or equal to the powder spraying length of the powder spraying head 70, and the width of the first collecting port 111 is greater than or equal to the powder spraying width of the powder spraying head 70. In this way, the first collecting port 111 can basically cover the length of the powder sprayed by the powder spraying head 70 in the length direction X and the width of the powder sprayed by the powder spraying head 70 in the width direction Y. This allows the first collecting tank 10 to basically collect the powder sprayed by the powder spraying head 70, ensuring the collection effect of the first collecting tank 10 and preventing the powder from scattering outside the first collecting tank 10.

[0051] The powder spraying length and powder spraying width of the powder spraying head 70 are respectively the length and width of the powder spraying area formed by connecting all the powder spraying nozzles of the powder spraying head 70.

[0052] The sieve 20 and the scraping assembly 40 are located at the first collection port 111.

[0053] like Figure 2 As shown, in some embodiments, the first collection tank 10 includes a side plate 11 and a bottom plate 12. The side plate 11 is connected to the bottom plate 12 and surrounds the upper side of the bottom plate 12. The bottom plate 12 is provided with a discharge port 121. The bottom plate 12 extends downward from the side plate 11 to the discharge port 121. The powder feeding assembly 50 is connected to the discharge port 121. In this way, the bottom of the first collection tank 10 can form a slope structure with a certain angle. When small particles of powder fall to the bottom of the first collection tank 10 through the powder screen 21, the slope can guide the small particles of powder to move towards the discharge port 121. That is, the small particles of powder can roll down the slope structure formed by the bottom plate 12 to the discharge port 121 and be recovered by the powder feeding assembly 50 through the discharge port 121, thereby avoiding the accumulation of small particles of powder on the upper surface of the bottom plate 12.

[0054] The base plate 12 can extend in an inclined plane or in an inclined arc.

[0055] The first collection port 111 is located at the upper end of the side plate 11.

[0056] Optionally, the powder feeding assembly 50 and the second collection tank 30 are located on opposite sides of the first collection tank 10; the discharge port 121 is set close to the powder feeding assembly 50 to shorten the distance from the discharge port 121 to the powder feeding assembly 50, thereby facilitating the powder feeding assembly 50 to recover small particles of powder in the first collection tank 10.

[0057] like Figure 2 As shown, in some embodiments, the powder sieving screen 21 includes a first screen 211 and a second screen 212. The first screen 211 is located above the second screen 212. The first screen 211 is provided with a plurality of first screen holes 2111, and the second screen 212 is provided with a plurality of second screen holes 2121. The aperture of the first screen holes 2111 is larger than the aperture of the second screen holes 2121. The first screen 211 is used for the first screening of the powder. The first screen holes 2111 on the first screen 211 allow particles smaller than the aperture of the first screen holes 2111 to pass through and fall onto the second screen 212. The second screen 212... For a second screening of powder, the second screen 212 has a second screen hole 2121 that allows particles smaller than the second screen hole 2121 to pass through and fall to the bottom of the first collection tank 10. In this way, the powder can be screened twice, so that relatively large debris stays on the first screen 211 and the second screen 212, while relatively small powder falls to the bottom of the first collection tank 10 and is recovered by the powder feeding assembly 50. This makes the powder recovered by the powder feeding assembly 50 more uniform and finer, thereby reducing mechanical wear on the powder feeding assembly 50 and improving the powder spraying quality of the powder spraying head 70.

[0058] The first screen 211 and the second screen 212 are arranged in parallel. The width direction Y of the first screen 211 and the second screen 212 is parallel to the width direction Y of the first collection port 111, and the length direction X of the first screen 211 and the second screen 212 is parallel to the length direction X of the first collection port 111.

[0059] It is understood that in some other embodiments, the number of screens in the powder sieving mesh 21 can be selected according to actual needs and is not limited to two, that is, it is not limited to the first screen 211 and the second screen 212 mentioned above. For example, the number of screens is one, and one of the first screen 211 and the second screen 212 can be omitted. Or, for example, the number of screens is three, and the powder sieving mesh 21 also includes a third screen. The first screen 211, the second screen 212 and the third screen are arranged sequentially from top to bottom. The third screen is provided with a number of third screen holes, and the diameter of the third screen holes is smaller than the diameter of the second screen holes 2121.

[0060] like Figure 2 and Figure 4 As shown, in some embodiments, the powder screening assembly 20 further includes a vibration motor 22, which is connected to the powder screening mesh 21. The vibration motor 22 is used to provide excitation force to the powder screening mesh 21, so that the powder screening mesh 21 can reciprocate and / or rotate circumferentially at a certain frequency and amplitude. During the vibration process, smaller powder particles can quickly fall through the screen holes of the powder screening mesh 21, which improves the powder screening efficiency and prevents the powder from clogging the screen holes of the powder screening mesh 21.

[0061] Specifically, the vibration motor 22 is installed on the side plate 11 of the first collection tank 10. The output end of the vibration motor 22 is provided with a flange 221, which is connected to the first screen 211 and the second screen 212. The vibration motor 22 provides excitation force to the first screen 211 and the second screen 212 through the flange 221.

[0062] like Figure 3 and Figure 4 As shown, in some embodiments, the scraping member 41 includes a connecting rod 411, a first scraper 412, and a second scraper 413. The connecting rod 411 is movably disposed on the first side of the first screen 211 and the second screen 212. The first scraper 412 and the second scraper 413 are respectively connected to the connecting rod 411. The first scraper 412 is located on the upper surface of the first screen 211 and is used to scrape the debris on the first screen 211 along the upper surface of the first screen 211 to the second collection tank 30. The second scraper 413 is located on the upper surface of the second screen 212. 413 is used to scrape the debris on the second screen 212 along the upper surface of the second screen 212 to the second collection tank 30; the second collection tank 30 is located on the second side of the first screen 211 and the second screen 212, with the first side and the second side adjacent to each other. Thus, the connecting rod 411 can drive the first scraper 412 and the second scraper 413 to move to the second side of the first screen 211 and the second screen 212 respectively from the first side of the first screen 211 and the second screen 212, so that the powder on the first screen 211 and the second screen 212 is scraped to the second collection tank 30.

[0063] In this embodiment, by separately providing the first scraper 412 and the second scraper 413, the particles on the first screen 211 and the second screen 212 can be scraped simultaneously, avoiding the accumulation of larger particles on the first screen 211 and the second screen 212, ensuring that the first screen 211 and the second screen 212 can screen powder smoothly without the need to remove the first screen 211 or the second screen 212 separately for cleaning, making it convenient to use. Furthermore, by setting the connecting rod 411 on the first side of the first screen 211 and the second screen 212, motion interference between the connecting rod 411 and the first screen 211 and the second screen 212 can be avoided.

[0064] exist Figure 3 and Figure 4 In the embodiment shown, the first side is one side of the width direction Y of the first screen 211 and the second screen 212, and the second side is the other side of the length direction X of the first screen 211 and the second screen 212.

[0065] Please continue reading. Figure 3 and Figure 4 In some embodiments, the scraping assembly 40 further includes a drive motor 42 connected to a connecting rod 411. The drive motor 42 drives the connecting rod 411 to move the first scraper 412 and the second scraper 413 along the upper surfaces of the first screen 211 and the second screen 212, respectively. Thus, when it is necessary to clean the debris on the first screen 211 and the second screen 212, the drive motor 42 can drive the scraper 41 to move along the length direction X of the first screen 211 and the second screen 212 toward the side where the second collection tank 30 is located (i.e., the second side of the first screen 211 and the second screen 212). After the scraping action is completed, the drive motor 42 can drive the scraper 41 to move away from the second collection tank 30 along the length direction X of the first screen 211 and the second screen 212. This is convenient to use, requires no manual cleaning, and improves cleaning efficiency and the degree of automation of the equipment.

[0066] Specifically, the drive motor 42 can be an electric push rod, which is installed in the first collection tank 10. The push rod 421 of the electric push rod is connected to the connecting rod 411. The electric push rod can drive the connecting rod 411 to move the first scraper 412 and the second scraper 413 along the upper surfaces of the first screen 211 and the second screen 212, respectively. In order to make the connecting rod 411 as balanced as possible, the push rod 421 of the electric push rod is located in the middle of the end where the first scraper 412 and the second scraper 413 are connected to the connecting rod 411.

[0067] Of course, the scraping component 41 can also be other structures used to scrape the upper surface of the sieve screen 21, and is not limited to the combination of the connecting rod 411, the first scraper 412, and the second scraper 413 described above. For example, each sieve screen has a corresponding scraper on its upper surface. The scrapers do not need to be connected by the connecting rod 411. Each scraper is connected to and driven by a drive motor 42, so that each scraper moves back and forth along the upper surface of the corresponding sieve screen. Specifically, taking the first sieve screen 211 and the second sieve screen 212 as examples, the upper surface of the first sieve screen 211 is provided with a first scraper 412, and the upper surface of the second sieve screen 212 is provided with a second scraper 413. The first scraper 412 is connected to the first drive motor 42, and the second scraper 413 is connected to the second drive motor 42. The first drive motor 42 and the second drive motor 42 can drive the first scraper 412 and the second scraper 413 to move, respectively.

[0068] To ensure that the scraping component 41 always moves back and forth along the length direction X of the first screen 211 and the second screen 212 without deflection, in some embodiments, the scraping assembly 40 further includes a guide rod 43. The guide rod 43 is arranged along the length direction X parallel to the first screen 211 and the second screen 212. The two ends of the guide rod 43 are respectively fixed to the opposite side walls of the first collection tank 10. The connecting rod 411 is slidably engaged with the guide rod 43. The guide rod 43 is used to guide the scraping component 41 to move along the length direction X of the first screen 211 and the second screen 212. In this way, the first scraper 412 can be prevented from deflecting relative to the first screen 211 and the first scraper 412 can be prevented from detaching from the upper surface of the first screen 211. The same applies to the second scraper 413.

[0069] Optionally, there are two guide rods 43, which are arranged side by side and spaced apart. The connecting rod 411 is provided with two through holes 4111, which are spaced apart. The two guide rods 43 are respectively inserted through the two through holes 4111. The output end of the drive motor 42 is located between the two guide rods 43 to make the connecting rod 411 as balanced as possible.

[0070] In some embodiments, a second collection port 31 is provided at the upper end of the second collection tank 30. The second collection port 31 is located on the second side of the second screen 212 and is used to allow debris on the screen 21 to pass through and fall into the interior of the second collection tank 30. The horizontal height of the second collection port 31 is less than or equal to the horizontal height of the second screen 212. Optionally, the horizontal height of the second collection port 31 is flush with the horizontal height of the lower surface of the second screen 212.

[0071] Please reconsider. Figure 1In some embodiments, the powder feeding assembly 50 includes a housing 51, a powder feeding motor, a first pipe 52, a second pipe 53, and a screw feeder 54. The powder feeding motor is installed inside the housing 51. The housing 51 is provided with a first opening 511 and a second opening 512, which are respectively connected to the interior of the housing 51. The first pipe 52 connects the first opening 511 and the first collection tank 10, so that the first collection tank 10 and the interior of the housing 51 are connected. The second pipe 53 connects the second opening 512 and the powder spraying head 70, so that the powder spraying head 70 and the interior of the housing 51 are connected. The screw feeder 54 is sleeved inside the second pipe 53 and connected to the output end of the powder feeding motor. The powder in the first collection tank 10 can enter the interior of the outer shell 51 through the discharge port 121, the first pipe 52 and the first opening 511 in sequence. The powder feeding motor can drive the spiral feeding rod 54 to rotate along the axis of the spiral feeding rod 54 to push the powder along the external thread of the spiral feeding rod 54 so that the powder in the powder outer shell 51 can be transported to the interior of the powder spraying head 70 through the second opening 512 and the second pipe 53 in sequence.

[0072] The two ends of the first pipe 52 are connected to the discharge port 121 and the first opening 511, respectively.

[0073] In some embodiments, a control valve 60 is also included. The control valve 60 is disposed between the first collecting tank 10 and the powder feeding assembly 50. The control valve 60 is used to control the on / off connection between the first collecting tank 10 and the powder feeding assembly 50. Thus, when maintenance of the powder feeding assembly 50 is required, the control valve 60 can cut off the connection between the interior of the first collecting tank 10 and the interior of the powder feeding assembly 50, so as to isolate the interior of the first collecting tank 10 and the interior of the powder feeding assembly 50 from each other, so as to prevent powder from continuing to flow into the interior of the powder feeding assembly 50, and to facilitate subsequent maintenance of the powder feeding assembly 50.

[0074] Specifically, the control valve 60 is connected to the first pipe 52, and the control valve 60 is used to cut off the internal flow of the first pipe 52, so as to isolate the material discharge port 121 and the first opening 511 from each other. The control valve 60 may be located at the first opening 511.

[0075] This utility model embodiment also provides a powder spraying device 1000, which includes a powder spraying head 70, a roller conveyor 80, and a recycling device 100 as described above. The roller conveyor 80 is disposed below the powder spraying head 70 and is used to carry the workpiece to be sprayed with powder so that the workpiece passes under the powder spraying head 70. The powder spraying head 70 is used to spray powder onto the workpiece on the roller conveyor 80 to form a coating on the surface of the workpiece. A first collection tank 10 is disposed below the roller conveyor 80. Powder that is not sprayed onto the workpiece falls onto the sieve screen 21 on the first collection tank 10 and is screened by the sieve screen 21.

[0076] The powder spraying device 1000 of this utility model embodiment has the beneficial effects of the recycling device 100, which will not be described in detail here.

[0077] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A recycling device for recycling powder ejected from a powder coating head and conveying the recycled powder back to the powder coating head, characterized in that, include: The first collection tank is located on the lower side of the powder spraying head; A powder sieving assembly includes a powder sieving screen, which is disposed in the first collection tank and is used to sieve powder. The second collection tank is located on the side of the powder sieve. The scraping assembly includes a scraping component, which is movably disposed on the upper surface of the sieve screen and is used to scrape the debris on the sieve screen to the second collection tank. A powder feeding assembly is connected to the first collection tank. The powder feeding assembly is used to recover the powder in the first collection tank and transport it to the powder spraying head.

2. The recycling device according to claim 1, characterized in that, The upper end of the first collection tank is provided with a first collection port, which faces the powder spraying head, and the width of the first collection port is greater than or equal to the powder spraying width of the powder spraying head.

3. The recycling device according to claim 1, characterized in that, The first collecting tank includes a side plate and a bottom plate. The side plate is connected to the bottom plate and surrounds the upper side of the bottom plate. The bottom plate is provided with a discharge port. The bottom plate extends downward from the side plate to the discharge port. The powder feeding assembly is connected to the discharge port.

4. The recycling device according to claim 1, characterized in that, The powder sieving mesh includes a first sieve and a second sieve. The first sieve is located above the second sieve. The first sieve has a plurality of first sieve holes, and the second sieve has a plurality of second sieve holes. The diameter of the first sieve holes is larger than the diameter of the second sieve holes.

5. The recycling device according to claim 4, characterized in that, The scraping component includes a connecting rod, a first scraper, and a second scraper. The connecting rod is movably disposed on a first side of the first screen and the second screen. The first scraper and the second scraper are respectively connected to the connecting rod. The first scraper is located on the upper surface of the first screen, and the second scraper is located on the upper surface of the second screen. The second collection tank is located on the second side of the first screen and the second screen, and the first side and the second side are adjacent to each other.

6. The recycling device according to claim 5, characterized in that, The scraping assembly also includes a drive motor connected to the connecting rod. The drive motor is used to drive the connecting rod to move the first scraper and the second scraper along the upper surfaces of the first screen and the second screen, respectively.

7. The recycling device according to claim 1, characterized in that, The powder screening assembly also includes a vibration motor connected to the powder screening screen, which is used to provide excitation force to the powder screening screen.

8. The recycling device according to claim 1, characterized in that, The powder feeding assembly includes a housing, a powder feeding motor, a first pipe, a second pipe, and a screw feeder. The powder feeding motor is installed inside the housing. The housing has a first opening and a second opening, which are respectively connected to the interior of the housing. The first pipe connects the first opening and the first collection tank. The second pipe connects the second opening and the powder spraying head. The screw feeder is sleeved inside the second pipe and connected to the output end of the powder feeding motor.

9. The recycling device according to claim 1, characterized in that, It also includes a control valve, which is disposed between the first collecting tank and the powder feeding assembly, and is used to control the on / off connection between the first collecting tank and the powder feeding assembly.

10. A powder spraying device, characterized in that, include: Powder spraying head; The roller conveyor is located on the lower side of the powder spraying head; as well as The recycling apparatus according to any one of claims 1 to 9, wherein the first collection tank is disposed on the lower side of the roller conveyor.

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